Goera skiasma Neboiss, 1990

Armitage & Arefina-Armitage, Tatiana I., 2011, Three new species of Goera Stephens (Trichoptera: Goeridae) from Sulawesi, Indonesia, Insecta Mundi 2011 (186), pp. 1-10 : 9

Goera skiasma Neboiss

Fig. 28-33

Goera skiasma Neboiss 1990: 87-89 , fig. 1-7, male, female.

Diagnosis. Male genitalia of G. skiasma are similar to those of the new Goera species from Sulawesi described herein, but can be easily distinguished from them by the ventrolateral process of tergum X positioned distantly from each other at base and by the presence of an additional pair of projections between them. In addition, it differs from G. neboissi by the simplicity of the distal segment of the inferior appendages, without any lobes, and by the long subbasal projection of the mesal process of the inferior appendages; from G. jolanda , by the absence of a fingerlike lobe dorsomesally on the mesal process of the inferior appendage; and, from G. higleri , in ventral view, by the shape of the mesal process of the inferior appendages and its subbasal projection. Based on the Neboiss (1990) illustrations, the female of G. skiasma appears to be very similar to that of G. higleri , but differs in the unequal anterior and posterior portions of the vaginal apparatus.

Material examined: INDONESIA, Sulawesi, Utara Dumoga-Bone N.P., Tumpah River & tributary junction, 19 May 1985, at light, Wells, Wilson, and Tan, 00 o 35’N 123 o 54’E (Project Wallace 1985), holotype male (T-10420) and paratype male (T-10421; genitalia prep. – PT - 1530) .

Remarks. The holotype male of this species has never had its abdomen cleared. Neboiss (1990) figured the paratype male. We compared the holotype and paratype, and found them identical in all external characters. We have redrawn the paratype and include it for the reader’s convenience. The erectile lobe of the male maxillary palp is most similar to that of G. higleri .

Figures

Figures 28-33. Goera skiasma Neboiss, male genitalia. 28) Lateral. 29) Dorsal. 30) Ventral. 31) Phallus, lateral. 32) Phallus, dorsal. 33) Processes of sternum VI.